obj-ptrn-id-trailing-comma.js (1140B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding/obj-ptrn-id-trailing-comma.case 4 // - src/dstr-binding/default/async-gen-func-decl.template 5 /*--- 6 description: Trailing comma is allowed following BindingPropertyList (async generator function declaration) 7 esid: sec-asyncgenerator-definitions-instantiatefunctionobject 8 features: [async-iteration] 9 flags: [generated, async] 10 info: | 11 AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier 12 ( FormalParameters ) { AsyncGeneratorBody } 13 14 [...] 15 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, 16 scope, strict). 17 [...] 18 19 20 13.3.3 Destructuring Binding Patterns 21 22 ObjectBindingPattern[Yield] : 23 { } 24 { BindingPropertyList[?Yield] } 25 { BindingPropertyList[?Yield] , } 26 ---*/ 27 28 29 var callCount = 0; 30 async function* f({ x, }) { 31 assert.sameValue(x, 23); 32 callCount = callCount + 1; 33 }; 34 f({ x: 23 }).next().then(() => { 35 assert.sameValue(callCount, 1, 'invoked exactly once'); 36 }).then($DONE, $DONE);